Clamping base for machining cabin cover of intelligent fan

Abstract

The invention discloses a clamping base for machining a cabin cover of an intelligent fan, and relates to the technical field of fan production. The multiple clamping assemblies are distributed on the bearing face in a surrounding mode and used for jointly restraining the cabin cover from multiple directions; the abutting end of each clamping assembly is provided with a dynamic deformation module, and the dynamic deformation module comprises a rigid supporting base body which is internally provided with a circular groove; and the elastic plate covers the opening of the groove in a sealing manner. Different driving parameter sets are called through the central controller, the telescopic unit is controlled to execute a wave damping mode or a dynamic wedge-shaped self-locking mode, the flexible abutting interface dynamically forms a specific target shape counterbalanced with a current machining force source, and therefore crossing from single static positioning to multi-element dynamic self-adaptive positioning is achieved, and the machining precision is improved. And the inherent defects of rigid positioning are fundamentally overcome by intelligently coping with two working procedures of punching and polishing with different mechanical properties.

Description

Technical Field

[0001] This invention relates to the field of wind turbine manufacturing technology, specifically to a clamping base for processing the nacelle cover of a smart wind turbine. Background Technology

[0002] In the field of wind power generation, the drilling and grinding of the sidewalls of the nacelle, a large thin-walled composite material component, are critical processes. Currently, rigid positioning using bolt assemblies and clamps is commonly employed. However, this static positioning method has inherent drawbacks: during processing, drilling generates strong rotational torque, while grinding induces high-frequency reciprocating vibrations. These two disturbance sources with drastically different mechanical properties both act on a single rigid contact interface.

[0003] Because rigid positioning systems cannot adaptively adjust their mechanical response strategies according to the type of process, the engine room cover is prone to micro-displacement and vibration during machining. This directly causes quality problems such as hole position deviation, hole burrs, and surface vibration marks, severely restricting the improvement of machining accuracy and product qualification rate. In existing technologies, although elastic gaskets are used for cushioning, they only involve passive deformation and cannot specifically and actively counteract and dissipate machining forces in a specific direction, thus having limited effectiveness. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a clamping base for processing the nacelle cover of a smart wind turbine.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A clamping base for machining the nacelle cover of a smart wind turbine includes:

[0007] Bearing surface;

[0008] Multiple clamping components are distributed around the bearing surface to jointly restrain the cabin cover from multiple directions;

[0009] Each of the clamping components has a dynamic deformation module at its abutment end, which includes:

[0010] A rigid support base with a circular groove inside;

[0011] An elastic plate, which covers the opening of the groove, forms a flexible contact interface that adaptively conforms to the curved surface of the outer wall of the cabin cover;

[0012] Multiple telescopic units are arranged in an axial ring array within the groove. The telescopic ends of each telescopic unit are connected to the flexible contact interface and can individually drive the corresponding area to deform.

[0013] Each of the telescopic units, based on the mechanical characteristics of the current processing step, coordinates and changes the support contour of the elastic plate, so that the flexible contact interface dynamically forms a specific target shape relative to the processing force source.

[0014] Preferably, the dynamic contact surface shape achieved by the coordinated action of the elastic plate includes a wave damping mode, and the multiple telescopic units sequentially generate time-sequential differentials, driving the contact surface of the elastic plate to form a wave deformation that propagates along the circumferential direction.

[0015] Preferably, the dynamic contact surface shape achieved by the coordinated action of the elastic plate includes a dynamic wedge self-locking mode, in which multiple telescopic units extend in a coordinated manner, causing the contact surface of the elastic plate to produce an asymmetrical wedge-shaped bulge, thus forming a dynamic self-locking.

[0016] Preferably, in wave damping mode, the gap generated between the wave deformation and the outer wall of the cabin cover of the elastic plate is crescent-shaped in cross-section at any instant, and the crescent-shaped gap propagates along the annular direction with the wave deformation, together forming a moving time-varying damping cavity.

[0017] Preferably, in the dynamic wedge self-locking mode, the gap between the wedge-shaped recess and the outer wall of the nacelle constitutes an asymmetric composite functional area, including:

[0018] The main wedge-shaped gap is located on the back slope of the wedge-shaped ridge. Its thickness gradually increases from the ridge peak to the distance. It provides stable damping force by gradually closing when resisting rotational torque.

[0019] The stress relief cavity, located on the uphill side of the wedge-shaped ridge, is a pocket-shaped cavity used to contain the compressed elastic material and provide a buffer stroke for overall deformation.

[0020] Preferably, a flexible wear-resistant layer is provided on the side of the elastic plate opposite to the groove.

[0021] Preferably, the bearing surface also includes a central controller;

[0022] The central controller is electrically connected to each of the telescopic units and has a pre-stored set of drive parameters corresponding to different processing steps.

[0023] The central controller is configured to receive instructions for the current processing step, call the corresponding set of drive parameters, and control each telescopic unit to execute the wave damping mode or the dynamic wedge self-locking mode.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention uses a central controller to call different sets of driving parameters to control the telescopic unit to execute wave damping mode or dynamic wedge self-locking mode, so that the flexible contact interface dynamically forms a specific target shape that counteracts the current processing force source. Thus, it realizes the leap from single static positioning to multi-dimensional dynamic adaptive positioning. By intelligently dealing with the two processes of drilling and grinding with very different mechanical properties, it fundamentally solves the inherent defects of rigid positioning. Attached Figure Description

[0026] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 Side view structural diagram;

[0029] Figure 3 This is a schematic diagram of a portion of the clamping component of the present invention abutting against the cabin canopy structure;

[0030] Figure 4 For the present invention Figure 3 A partial structural diagram of the clamping component;

[0031] Figure 5 This is a cross-sectional view of the dynamic deformation module of the present invention and a schematic diagram of the cross-sectional structure of its wave damping mode in contact with the nacelle canopy.

[0032] Figure 6 This is a cross-sectional view of the dynamic deformation module of the present invention and a schematic diagram of its dynamic wedge self-locking mode abutting the nacelle cover cross-section structure.

[0033] The diagram is labeled as follows: 1. Bearing surface; 2. Clamping assembly; 3. Dynamic deformation module; 31. Rigid support base; 311. Groove; 32. Elastic plate; 33. Telescopic unit; 4. Flexible wear-resistant layer; 5. Central controller. Detailed Implementation

[0034] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0035] Example

[0036] like Figures 1-6As shown, a clamping base for processing the nacelle cover of a smart wind turbine includes:

[0037] Bearing surface 1;

[0038] Multiple clamping components 2 are distributed around the bearing surface 1 to jointly constrain the cabin cover from multiple directions;

[0039] The clamping assembly 2 can be a bolt and nut assembly, in which the bolt rotates helically within the nut to achieve contact and positioning with the outer wall of the nacelle cover. Alternatively, the clamping assembly 2 can be a screw and threaded cylinder assembly to achieve contact and positioning with the outer wall of the nacelle cover, or it can be any technical means known to those skilled in the art to achieve contact and positioning with the outer wall of the nacelle cover.

[0040] Each clamping component 2 has a dynamic deformation module 3 at its abutment end, which includes:

[0041] The rigid support base 31 has a circular groove 311 inside;

[0042] The elastic plate 32, which covers the opening of the groove 311, forms a flexible contact interface that adaptively fits the curved surface of the outer wall of the cabin cover.

[0043] Multiple telescopic units 33 are arranged in an axial ring array within the groove 311. The telescopic ends of each telescopic unit 33 are connected to the flexible contact interface and can be driven to deform the corresponding area individually.

[0044] The telescopic unit 33 can be a miniature electric telescopic rod. The telescopic end of the corresponding miniature electric telescopic rod is activated by the central controller 5 to abut against the flexible contact interface in the corresponding area. The resulting shape counteracts the force source of the current processing step. The telescopic unit 33 can also be magnetically coupled to abut against the flexible contact interface in the corresponding area. The resulting shape counteracts the force source of the current processing step. Alternatively, it can be a technique known to those skilled in the art to achieve the pushing and changing of the shape of the flexible contact interface.

[0045] Each telescopic unit 33, based on the mechanical characteristics of the current processing procedure, coordinates and changes the support contour of the elastic plate 32, so that the flexible contact interface dynamically forms a specific target shape relative to the processing force source.

[0046] In the existing nacelle cover fixing system, the nacelle cover is positioned by abutting the abutting end of clamping component 2. This rigid positioning method causes several problems during sidewall drilling and grinding operations. Firstly, positioning is unstable. Drilling generates rotational and axial forces, while grinding generates reciprocating and axial forces. The direction and variability of these forces can cause slight displacement or vibration of the nacelle cover during processing, thus affecting processing accuracy (such as hole position deviation or surface roughness). Secondly, processing quality deteriorates. Due to vibration and displacement, drilling may produce burrs or uneven hole diameters, and grinding may produce ripples or uneven surfaces, leading to a lower product yield. To solve the positioning problem of the nacelle cover during drilling and grinding operations, the following settings are implemented:

[0047] The bearing surface 1 also includes a central controller 5;

[0048] The central controller 5 is electrically connected to each telescopic unit 33, and it has a pre-stored set of drive parameters corresponding to different processing steps;

[0049] The central controller 5 is configured to receive instructions for the current processing procedure, call the corresponding drive parameter set, and control each telescopic unit 33 to execute wave damping mode or dynamic wedge self-locking mode.

[0050] Through an intelligent closed loop of perception-decision-execution, the traditional static rigid clamping is transformed into an adaptive dynamic clamping that can proactively predict, dynamically respond, and accurately counteract processing disturbances.

[0051] The first stage is intelligent perception and forward-looking decision-making. The system receives processing instructions from the host system (such as a CNC system) through the central controller 5. The instructions themselves contain information about the main force characteristics to be applied to the engine room cover (such as the rotational torque of drilling and the reciprocating vibration of grinding).

[0052] The second stage is dynamic execution and morphological reconstruction. Based on the prediction results, the central controller 5 calls the pre-stored set of driving parameters to control the telescopic units 33 distributed in the ring array to perform precise coordinated actions, changing their support contour on the elastic plate 32. This transforms the originally flat elastic plate 32 from a passive contact interface into an actively generated mechanical surface with specific tactical objectives.

[0053] like Figures 5-6 As shown, specifically, the dynamic contact surface shape achieved by the coordinated action of the elastic plate 32 includes a wave damping mode. Multiple telescopic units 33 sequentially generate time-sequential differentials, driving the contact surface of the elastic plate 32 to form a wave deformation that propagates along the circumferential direction, so as to actively cancel and dissipate the reciprocating vibration from the grinding operation.

[0054] The dynamic contact surface shape achieved by the coordinated action of the elastic plate 32 includes a dynamic wedge self-locking mode. Multiple telescopic units 33 extend in sections in coordination, causing the contact surface of the elastic plate 32 to produce an asymmetrical wedge-shaped bulge. The inclined direction of the wedge-shaped bulge is configured to resist the rotational torque from the drilling operation, thus forming a dynamic self-locking.

[0055] The third stage is a mechanical confrontation, in which two completely different but extremely precise confrontation strategies are adopted against different force sources:

[0056] To address grinding vibration, an interference and energy dissipation strategy of wave-to-wave interference is employed. In wave damping mode, the time-sequential differential of the telescopic unit 33 drives the surface of the elastic plate 32 to produce a continuous moving wave deformation. This moving wave interferes with the incoming reciprocating vibration at the interface, and the vibration is actively canceled and dissipated, keeping the cabin cover stable.

[0057] For the dynamic self-locking force conversion and buffering strategy for drilling rotation, in the dynamic wedge self-locking mode, the telescopic unit 33 extends in a coordinated manner, causing an asymmetric wedge-shaped bulge to form on the surface of the elastic plate 32. When the rotational torque is applied, the wedge-shaped slope decomposes it into a huge normal pressure, significantly increasing the frictional force to lock the nacelle cover and suppress micro-displacement of the nacelle cover.

[0058] Through the precise mechanical countermeasures in the third stage described above, the harmful dynamic responses (vibration, displacement) of the nacelle cover during the processing are suppressed to an extremely low level. The intelligent sensing gains the upper hand, and through dynamic execution and interface reconstruction, it ultimately relies on ingenious physical principles (wave interference, inclined plane self-locking) to achieve the pinpoint elimination of specific processing disturbances. This shift from passively enduring to actively managing provides high-quality, high-efficiency, and high-reliability processing, which can effectively eliminate the deformation and displacement of the nacelle cover caused by processing vibration and cutting torque, providing a key guarantee for achieving millimeter-level (preferably ≤1mm) processing accuracy for large thin-walled components.

[0059] like Figure 5 As shown, specifically, in wave damping mode, the gap generated between the elastic plate 32 and the outer wall of the cabin cover is crescent-shaped in cross-section at any instant, and the crescent-shaped gap propagates along the annular direction with the wave deformation, together forming a moving time-varying damping cavity.

[0060] Traditional vibration reduction is a passive resistance method, relying on material absorption, while vibration energy still exists within the system. The design of a moving crescent-shaped gap achieves active guidance and annihilation, and its working principle can be divided into three synergistic stages:

[0061] The first stage is interference cancellation. The vibration wave directly impacts the cabin canopy, and the vibration transmitted to the canopy can be considered as a stress wave propagating within the canopy wall. When it reaches the interface in contact with the elastic plate 32, it exhibits a tendency to cause the cabin canopy wall to undergo high-frequency, small-amplitude reciprocating motion. At this time, the moving wave on the elastic plate 32 is propagating. The central controller 5 precisely controls the frequency and phase of the wave propagation through a preset program, maintaining a fixed anti-phase relationship with the incoming vibration wave. When the vibration wave drives the cabin canopy wall towards the elastic plate 32 (the "crest" of the vibration), the wave of the elastic plate 32 propagates precisely to this point, where its trough (i.e., the thickest part of the crescent-shaped gap) meets it, providing a downhill slope to counteract its upward momentum. Conversely, when the cabin canopy wall attempts to leave the elastic plate 32 (the "trough" of the vibration), the crest (contact point) of the elastic plate 32 tightly holds it back, counteracting its downward momentum.

[0062] The second stage involves energy guidance and conversion, introducing vibrational energy into the surrounding area. Even after the initial attack, some vibrational energy still enters the system. The unique shape of the crescent-shaped gap then plays a second role; it is a gradually narrowing, asymmetrical flow channel. The gap at its leading edge (in the direction of wave propagation) gradually decreases, while the gap at its trailing edge gradually widens. As the gap moves, this shape generates a powerful pumping effect and directional shearing on the air within the cavity. The pumping effect occurs because the narrowing gap at the leading edge acts like a piston, compressing and propelling the air forward. Shear dissipation occurs in the widening gap at the trailing edge, where the high-speed airflow drops sharply, creating microscale turbulence and eddies. Intense internal friction (viscous drag) occurs between air molecules and between the air and the elastic plate 32 / cabin cover wall. This process efficiently converts the residual vibrational mechanical energy into the kinetic energy of the air and ultimately, thermal energy. This moving cavity is essentially a miniature thermal energy converter crawling along the contact surface.

[0063] The third stage involves system coordination. While the effect of a single crescent-shaped gap is instantaneous, the overall system design ensures the continuity of the effect. The telescopic unit 33 of the ring array ensures that waves can propagate continuously around the perimeter. For any point on the nacelle wall, throughout the entire duration of its vibration excitation, it will be continuously subjected to the combined effects of the aforementioned interference cancellation and energy conduction. This results in a continuous, dynamic vibration suppression effect over a surface area, rather than intermittent control over a single point.

[0064] By linking the above three stages together, a complete wave-to-wave working chain is formed. The reciprocating vibration energy from the grinding operation is actively and proactively canceled, guided, and ultimately dissipated at this flexible contact interface before it reaches the cutting tool and affects the machining quality.

[0065] like Figure 6As shown, specifically, in the dynamic wedge self-locking mode, the gap created between the wedge-shaped recess and the outer wall of the nacelle cowl of the elastic plate 32 constitutes an asymmetric composite functional area, including:

[0066] The main wedge-shaped gap is located on the back slope of the wedge-shaped ridge. Its thickness gradually increases from the ridge peak to the distance. It provides stable damping force by gradually closing when resisting rotational torque.

[0067] The stress relief cavity, located on the uphill side of the wedge-shaped ridge, is a pocket-shaped cavity used to contain the compressed elastic material and provide a buffer stroke for overall deformation.

[0068] Traditional rigid contact attempts to stop movement with brute force, but this easily leads to stress concentration and impact. In this case, the solution uses a strategy of using softness to overcome hardness and guiding transformation. The complete workflow is as follows:

[0069] The first stage involves force conversion and progressive resistance (the core function of the main wedge-shaped gap). When the drill bit rotates and cuts into the nacelle cover, it generates a huge rotational torque (M), attempting to push the nacelle cover to rotate counterclockwise. At this time, the rotational tendency of the nacelle cover causes it to exert a compressive tangential force (F) on the back slope of the wedge-shaped ridge. Since the contact surface is inclined, this tangential force (F) is decomposed into two components: one is a huge normal pressure (F_normal) pointing inwards from the elastic plate 32, and the other is an upward component along the inclined plane. This transforms the rotational force that causes displacement into a normal pressure that greatly enhances the clamping stability. This sudden increase in F_normal causes the static friction force (F_friction) between the elastic plate 32 and the nacelle cover to increase exponentially, which is the primary condition for achieving self-locking. Combined with the damping effect of progressive closure, the gradually expanding shape of the main wedge-shaped gap is key. At the moment of impact of the torque, the gap does not close instantly, but starts from the thinnest part near the peak and gradually transmits the closure to the distance, avoiding rigid collisions and providing extremely stable resistance, so that the displacement of the cabin canopy is controlled at the micrometer level.

[0070] The second stage involves stress management and impact buffering. Simultaneously with the action of the main wedge-shaped gap, the stress relief cavity provides crucial support from behind. It accommodates material deformation and prevents stress concentration. When the main wedge-shaped gap closes, the elastic material on its back slope is severely compressed. The pocket-shaped stress relief cavity, located directly opposite the compressed area, prevents the elastic material from experiencing extremely high stress concentration internally due to lack of outlet, which could lead to localized hardening, failure, or even tearing of the elastic plate 32. This ensures the long-term reliability and lifespan of the flexible contact interface.

[0071] Providing additional travel and converting impact energy, the entire wedge-shaped bulge exhibits a slight, overall deformation tendency at the moment of maximum impact. The presence of the stress relief chamber allows the entire elastomer structure to function like a miniature shock absorber, absorbing the most destructive instantaneous peak energy of the rotational torque through its own elastic deformation, transforming the impact into a gradual change. This absorbed energy is slowly released through elastic restoring force as the processing force stabilizes, further transforming into a stable clamping force on the nacelle cover, rather than being transmitted as vibration. At this point, the micro-displacement of the nacelle cover is suppressed, thereby achieving high-precision drilling. Through the design of the asymmetric composite functional area, it no longer simply holds the material in place, but actively guides the flow of force, manages material deformation, and converts the form of energy.

[0072] like Figure 4 As shown, in another embodiment, a flexible wear-resistant layer 4 is provided on the side of the elastic plate 32 facing away from the groove 311.

[0073] The flexible wear-resistant layer 4 is made of polyurethane elastomer or reinforced silicone rubber. The flexible wear-resistant layer 4 is configured to help dissipate high-frequency vibration energy in wave damping mode by virtue of its high damping characteristics, and to provide the static friction force necessary to achieve self-locking in dynamic wedge self-locking mode by virtue of its high coefficient of friction, thus protecting the elastic plate 32 from wear and mechanical damage.

[0074] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A clamping base for processing a nacelle cover of a smart fan, characterized in that, The utility model relates to a kind of machine cabin cover processing device, including: Carrying surface; Multiple clamping components are distributed around the carrying surface, used to jointly constrain machine cabin cover from multiple directions; The abutting end of each clamping component is provided with a dynamic deformation module, which includes: A rigid support base with a circular groove inside; A flexible plate covers the opening of the groove, forming a flexible abutting interface that self-adapts to the curved surface of the machine cabin cover outer wall; Multiple telescopic units are arranged in an axial annular array within the groove, and the telescopic ends of each telescopic unit are connected to the flexible abutting interface and can be individually driven to cause deformation in the corresponding area. Wherein, each telescopic unit is controlled to act in coordination to change the support profile of the flexible plate according to the mechanical properties of the current processing procedure, so that the flexible abutting interface dynamically forms a specific target shape that counteracts the processing force source.

2. A clamping base for machining a nacelle cover of a smart fan according to claim 1, characterized in that: The dynamic abutting surface shape achieved by the cooperative action of the flexible plate includes a wave damping mode, and multiple telescopic units sequentially generate a time differential, driving the abutting surface of the flexible plate to form a wave deformation that propagates in the annular direction.

3. The clamping base for machining the nacelle cover of a smart fan according to claim 1, characterized in that: The dynamic abutting surface shape achieved by the cooperative action of the flexible plate includes a dynamic wedge-shaped self-locking mode, and multiple telescopic units are partitioned to act in coordination to extend, driving the abutting surface of the flexible plate to produce an asymmetric wedge-shaped protrusion, forming a dynamic self-lock.

4. The clamping base for machining the nacelle cover of a smart fan according to claim 2, characterized in that: In the wave damping mode, the gap between the wave deformation and the machine cabin cover outer wall is crescent-shaped at any instantaneous cross-section, and the crescent-shaped gap propagates along the annular direction with the wave deformation, collectively forming a moving time-varying damping cavity.

5. The clamping base for machining the nacelle cover of a smart fan according to claim 3, characterized in that: In the dynamic wedge-shaped self-locking mode, the gap between the wedge-shaped concave and the machine cabin cover outer wall forms an asymmetric composite functional area, including: A main wedge-shaped gap located on the back slope of the wedge-shaped protrusion, with a thickness that gradually expands away from the protrusion peak, providing stable damping force through progressive closure when resisting rotational torque; A stress relief cavity located on the front slope of the wedge-shaped protrusion, shaped like a pocket-shaped cavity, used to accommodate compressed elastic material and provide a buffer stroke for overall deformation.

6. A clamping base for machining of a nacelle cover of a smart fan as claimed in claim 1, characterized in that: The side of the flexible plate opposite to the groove is provided with a flexible wear-resistant layer.

7. A clamping base for machining of a nacelle cover of a smart fan as claimed in claim 1, characterized in that: The carrying surface also includes a central controller; The central controller is electrically connected to each telescopic unit, and pre-stores a set of driving parameters corresponding to different processing procedures in it; The central controller is configured to receive instructions for the current processing procedure, call the corresponding set of driving parameters, and control each telescopic unit to execute the wave damping mode or the dynamic wedge-shaped self-locking mode.

Images